Chun-hong Hu1, Xiang-ming Fang, Xiao-yun Hu, Lei Cui. 1. Imaging Center, The First Affiliated Hospital of Soochow University, No.188, Shizi Street, Suzhou City, Jiangsu Province 215006, People's Republic of China. hch5305@163.com
Abstract
OBJECTIVE: To explore the mismatched manifestation between regional cerebral blood flow (rCBF) and regional cerebral blood volume (rCBV) of astrocytomas. METHODS: Both conventional and perfusion CT were performed on 29 patients with pathologically confirmed astrocytomas (15 cases in Grades I-II, 14 cases in Grades III-IV). Time-density curves were plotted, cerebral blood flow and volume maps were generated, and the values between rCBF and rCBV in the same region of interest (ROI) were compared. RESULTS: Twelve low-grade astrocytomas showed low or medium values of both rCBF (46.95+/-22.92 ml 100 g(-1) mm(-1)) and rCBV (5.74+/-3.61 ml 100 g(-1)); 12 high-grade astrocytomas showed high values of both rCBF (95.44+/-42.58 ml 100 g(-1) min(-1)) and rCBV (9.24+/-5.32 ml 100g(-1)). These cases exhibited agreement between the values of rCBF and rCBV. However, the remaining five astrocytomas were mismatched, showing reduced rCBF value and increased rCBV value in the same ROI. The discrepancy may mislead to an inaccuracy of perfusion CT in grading gliomas. CONCLUSIONS: The mismatched manifestation between rCBF and rCBV occasionally exists in some areas of astrocytomas. Hence, attention should be paid to assessments in preoperative grading of astrocytomas and in monitoring therapeutic effects.
OBJECTIVE: To explore the mismatched manifestation between regional cerebral blood flow (rCBF) and regional cerebral blood volume (rCBV) of astrocytomas. METHODS: Both conventional and perfusion CT were performed on 29 patients with pathologically confirmed astrocytomas (15 cases in Grades I-II, 14 cases in Grades III-IV). Time-density curves were plotted, cerebral blood flow and volume maps were generated, and the values between rCBF and rCBV in the same region of interest (ROI) were compared. RESULTS: Twelve low-grade astrocytomas showed low or medium values of both rCBF (46.95+/-22.92 ml 100 g(-1) mm(-1)) and rCBV (5.74+/-3.61 ml 100 g(-1)); 12 high-grade astrocytomas showed high values of both rCBF (95.44+/-42.58 ml 100 g(-1) min(-1)) and rCBV (9.24+/-5.32 ml 100g(-1)). These cases exhibited agreement between the values of rCBF and rCBV. However, the remaining five astrocytomas were mismatched, showing reduced rCBF value and increased rCBV value in the same ROI. The discrepancy may mislead to an inaccuracy of perfusion CT in grading gliomas. CONCLUSIONS: The mismatched manifestation between rCBF and rCBV occasionally exists in some areas of astrocytomas. Hence, attention should be paid to assessments in preoperative grading of astrocytomas and in monitoring therapeutic effects.
Authors: Francesca Granata; Rosa Morabito; Concetta Alafaci; Valeria Barresi; Francesco Tomasello; Sergio Vinci; Enricomaria Mormina; Alessandro Calamuneri; Giovanni Grasso; Francesco Maria Salpietro; Marcello Longo Journal: Neuroradiol J Date: 2015-06
Authors: Vittorio Stumpo; Lelio Guida; Jacopo Bellomo; Christiaan Hendrik Bas Van Niftrik; Martina Sebök; Moncef Berhouma; Andrea Bink; Michael Weller; Zsolt Kulcsar; Luca Regli; Jorn Fierstra Journal: Cancers (Basel) Date: 2022-03-05 Impact factor: 6.639